I am using a voltage divider to supply a voltage to a system (I don't know what sort of circuit I am supplying the signal to, except it's used to drive a very large motor. It needs a 0-5v signal). Other than this, there is another input to the system as well, a 72V switching signal.
I am using two 10K resistors at the moment (this is for testing purposes) for the voltage divider. The voltage divider has a supply of 5V, so the signal is 2.5V. The circuit is given below, and the red arrow indicates the signal.
The strange behavior occurs when the switching signal is turned on, at which point the voltage signal suddenly jumps to 5V.
In addition to that, there is no response to the input signal at all. The system is working, because it responds to the original signal from an accelerator pedal.
Any idea what could be causing this behavior?
EDIT: The original accelerator pedal is the one in this link: https://www.alibaba.com/product-detail/electric-vehicle-foot-pedal-with-potentiometer_60649371220.html?spm=a2700.7724857.main07.9.28a05756UO1eV2.